KR101110132B1 - 램프 오픈 감지회로와 감지방법 및 그 디스플레이 장치 - Google Patents

램프 오픈 감지회로와 감지방법 및 그 디스플레이 장치 Download PDF

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Publication number
KR101110132B1
KR101110132B1 KR1020040096762A KR20040096762A KR101110132B1 KR 101110132 B1 KR101110132 B1 KR 101110132B1 KR 1020040096762 A KR1020040096762 A KR 1020040096762A KR 20040096762 A KR20040096762 A KR 20040096762A KR 101110132 B1 KR101110132 B1 KR 101110132B1
Authority
KR
South Korea
Prior art keywords
lamp
sensing
voltage
enable signal
output
Prior art date
Application number
KR1020040096762A
Other languages
English (en)
Korean (ko)
Other versions
KR20060057730A (ko
Inventor
신현일
이재호
이창호
Original Assignee
엘지디스플레이 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지디스플레이 주식회사 filed Critical 엘지디스플레이 주식회사
Priority to KR1020040096762A priority Critical patent/KR101110132B1/ko
Priority to JP2005191264A priority patent/JP4146853B2/ja
Priority to CN2005100824337A priority patent/CN100406997C/zh
Priority to US11/169,783 priority patent/US7298096B2/en
Publication of KR20060057730A publication Critical patent/KR20060057730A/ko
Priority to US11/898,312 priority patent/US7902772B2/en
Application granted granted Critical
Publication of KR101110132B1 publication Critical patent/KR101110132B1/ko

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/24—Circuit arrangements for protecting against overvoltage

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
KR1020040096762A 2004-11-24 2004-11-24 램프 오픈 감지회로와 감지방법 및 그 디스플레이 장치 KR101110132B1 (ko)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020040096762A KR101110132B1 (ko) 2004-11-24 2004-11-24 램프 오픈 감지회로와 감지방법 및 그 디스플레이 장치
JP2005191264A JP4146853B2 (ja) 2004-11-24 2005-06-30 ランプオープン感知回路と感知方法及びそのディスプレイ装置
CN2005100824337A CN100406997C (zh) 2004-11-24 2005-06-30 检测开路灯的电路和方法及具有该电路的显示器件
US11/169,783 US7298096B2 (en) 2004-11-24 2005-06-30 Circuit and method for sensing open-circuit lamp of a backlight unit and display device with circuit for sensing open-circuit lamp of backlight unit
US11/898,312 US7902772B2 (en) 2004-11-24 2007-09-11 Circuit and method for sensing open-circuit lamp of a backlight unit and display device with circuit for sensing open-circuit lamp of backlight unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040096762A KR101110132B1 (ko) 2004-11-24 2004-11-24 램프 오픈 감지회로와 감지방법 및 그 디스플레이 장치

Publications (2)

Publication Number Publication Date
KR20060057730A KR20060057730A (ko) 2006-05-29
KR101110132B1 true KR101110132B1 (ko) 2012-02-10

Family

ID=36460337

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020040096762A KR101110132B1 (ko) 2004-11-24 2004-11-24 램프 오픈 감지회로와 감지방법 및 그 디스플레이 장치

Country Status (4)

Country Link
US (2) US7298096B2 (zh)
JP (1) JP4146853B2 (zh)
KR (1) KR101110132B1 (zh)
CN (1) CN100406997C (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100747977B1 (ko) * 2006-09-26 2007-08-08 엘지이노텍 주식회사 오픈 램프 보호 회로
CN101359153B (zh) * 2007-08-02 2010-12-08 鸿富锦精密工业（深圳）有限公司 曝光驱动电路
KR101475425B1 (ko) * 2012-06-15 2014-12-22 주식회사 엘지화학 신규한 전지팩 접속 구조를 포함하는 모바일 디바이스
US9645095B2 (en) 2014-10-06 2017-05-09 The Boeing Company System and method for inspecting a composite part during manufacture
CN104507215B (zh) * 2014-12-04 2018-05-04 苏州工业园区海的机电科技有限公司 Led模组点亮检测装置及其点亮检测方法
US10661512B2 (en) 2017-04-25 2020-05-26 The Boeing Company Measurement of ply boundaries

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100371792B1 (ko) 1998-12-11 2003-02-11 닛뽄덴끼 가부시끼가이샤 전원공급회로

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09129382A (ja) * 1995-10-17 1997-05-16 Internatl Business Mach Corp <Ibm> 放電管回路異常検出装置及び情報処理システム
IL119596A0 (en) * 1996-11-11 1997-07-13 Shefer Mordechai Method of increasing the dynamic range of image sensors
JP2000116157A (ja) 1998-09-29 2000-04-21 Mitsui Chemicals Inc 圧電トランスを備えた電源装置
JP3063755B1 (ja) * 1999-04-08 2000-07-12 株式会社村田製作所 圧電トランスインバ―タ
US6362578B1 (en) * 1999-12-23 2002-03-26 Stmicroelectronics, Inc. LED driver circuit and method
JP2002111865A (ja) * 2000-10-03 2002-04-12 Nec Access Technica Ltd カラー液晶を表示部として持つ電子機器ならびにその照明方法
JP2002260246A (ja) * 2001-03-02 2002-09-13 Texas Instr Japan Ltd 光ディスク判別回路
DE10115388A1 (de) * 2001-03-28 2002-10-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ansteuerschaltung für ein LED-Array
US6979959B2 (en) * 2002-12-13 2005-12-27 Microsemi Corporation Apparatus and method for striking a fluorescent lamp
JP4045964B2 (ja) * 2003-01-28 2008-02-13 松下電工株式会社 放電ランプ点灯装置
JP2004260230A (ja) * 2003-02-24 2004-09-16 Nec Kansai Ltd 光電流・電圧変換回路
KR100937714B1 (ko) 2003-03-03 2010-01-20 삼성전자주식회사 램프 구동 장치, 이를 이용한 백라이트 어셈블리 및 이를이용한 액정표시장치
US6870330B2 (en) * 2003-03-26 2005-03-22 Microsemi Corporation Shorted lamp detection in backlight system
JP3600915B1 (ja) * 2003-10-09 2004-12-15 ローム株式会社 スイッチング電源装置及び表示装置付き電子機器
WO2005059964A2 (en) * 2003-12-16 2005-06-30 Microsemi Corporation Current-mode driver
US7038400B2 (en) * 2004-03-12 2006-05-02 Juno Manufacturing, Inc. Constant current Class 3 lighting system
US7276861B1 (en) * 2004-09-21 2007-10-02 Exclara, Inc. System and method for driving LED
KR101126477B1 (ko) * 2004-10-25 2012-03-30 엘지디스플레이 주식회사 램프 구동장치 및 구동방법과 이를 이용한 액정표시장치

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100371792B1 (ko) 1998-12-11 2003-02-11 닛뽄덴끼 가부시끼가이샤 전원공급회로

Also Published As

Publication number Publication date
CN1779523A (zh) 2006-05-31
US20080001556A1 (en) 2008-01-03
KR20060057730A (ko) 2006-05-29
JP4146853B2 (ja) 2008-09-10
US20060108948A1 (en) 2006-05-25
US7902772B2 (en) 2011-03-08
US7298096B2 (en) 2007-11-20
JP2006147527A (ja) 2006-06-08
CN100406997C (zh) 2008-07-30

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